Özet:

Objective: The contents of adhesive systems directly affect their bond strength. The purpose of this in vitro study was to evaluate the bond strength of experimental two-step self-etch (SE) adhesive containing Poly(methyl vinyl ether-co-maleic anhydride) (PVM/MA) Copolymer (Gantrez S-97 HSU Solution, USA) and to compare its bond strength with those of commercially available SE adhesives and experimental two-step SE adhesive free of PVM/MA copolymer. Materials and Methods: Fifty extracted human molar teeth were randomly divided into 5 equal group as follows (n=10); Clearfil SE Bond (SEB) (Kuraray Co., Osaka, Japan), Clearfil Protect Bond (PrB) (Kuraray Co., Osaka, Japan), Clearfil Universal Bond (UniB) (Kuraray Co., Osaka, Japan), experimental adhesive (ExpA), ExpA containing PVM/MA (ExpA-G). After application of the adhesives to dentin, resin composites were bonded. Specimens were stored in distilled water for 24 h, and sectioned into beams followed by subjection to microtensile bond forces. Data were analyzed with ANOVA followed by Holm-Sidak multiple comparison test (α=0.05). Results: ANOVA results revealed a significant difference between the mean bond strength values of the adhesives (p<0.0001). Multiple comparisons showed that mean bond strengths of all of the adhesives were significantly different from each other (p<0.05). Highest bond strength was obtained in commercially available two-step SE adhesive, SEB (15.93±6.84 MPa); while the lowest bond strength was obtained in the ExpA containing PVM/MA, ExpA-G (6.08±2.85 MPa). The ExpA containing PVM/MA (ExpA-G) showed lower bonds strength values than the ExpA without PVM/MA (ExpA) (p<0.05). Conclusion: Addition of PVM/MA into the experimental two-step self-etch adhesive led to lower bond strengths.

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